Padlock



June 20, 1939. v F. E. RAYMOND 2,163,311

' PADLocx Filed March 2, 1957 j IN V EN TOR.

van@ WM A TTORNE YS.

Patented June 20, 1939 UNITED YSTATES PADLocK Frank E. Raymond,Stamford, Conn., ,assigner to The Yale & Towne Manufacturing Company,Stamford, Conn., a corporation -of Connecticut Application March 2, 1937Serial No. 128,509

11 Claims.

This invention relates to a padlock of the type in which the shackle islocked by a spring.

In padlocks of this type, the spring usually has one or more legs whichlock into notches Von the padlock shackle, the legs being spread apartby a key so as to Abe moved out of the notches in the shackle so thatthe shackle may vbe projected out of the padlock casing.

It is necessary lin a padlock of this type to provide means for limitingthe movement of the shackle out of the casing, also to provide means forpreventing reinsertion of the shackle vin a particular rotated positionwhich will allow locking of the shackle With one of its legs not inthepadlock casing, My invention contributes to the art a novel andextremely simple means for limiting the movement of the shackle out cithe casing and for preventing the shackle from being locked whendisaligned relatively to the casing. While I shall describe a specificfor-rn of myjinvention, it should be understood that my contribution isbasic, and that I should not ibe limited to the particular features ofthe construction herein shown and described.

I shall 'now refer to thedrawing wherein Fig. l is a section of my locktaken along lines i-i ci Fig, 2, Fig. 2 being an elevation of thepadlock with one half of the casing removed. Fig...3 is a section alongthe lines 3-3 of Figj. Figs. l and 5 are drawn along the saine lines asFig. 3 and show theparts in different positions. Fig. 6 is a side'vievvof the lock of Fig. 2 with part of the lfront half of the casing shownreplaced, and with the shackle shown partially out of the casing and ina released position.

Referring now more particularly to the drawing, my padlock casing isformed of two parts il `andviZ, probably best shown in Fig. l, heldtogether by four rivets I3 in a manner well understood by those skilledin the art. A U spring le is mounted transversely of thecasing, as isprobably best shown in Fig. 1, and has a locking leg 'I5 and a limitingleg I-B, the function of which will be described later. The locking legI5 ts into the notch i511. of a shackle I'I which has a nose I8 fittinginto a chamber I9 formed between the two halves I I and I2 of thepadlock casing.

The shackle Il extends downwardly and terminates in a shouldered portion2G with which cooperates a spring 2| tending to move thehackles upwardlyfrom its position of Fig. 2 to its position of Figs. 4 and 6, `when theshackle is vreleased by movement of the locking leg i5 of the spring I4.f

For operating the locking leg I5 of spring It, my casing has mounted akey guideway 22 having a series of notches 23, any one of which mayhouse a ward 2li which cooperates with a key 25. The key 25 is `designedto escape the one or more 5 wards Zit which maybe used so that it may berotated from its full line position of Fig. l to the dotted lineposition of Fig. 1, and in so doing, move the leg i5 oi spring I4 fromits full line position in Fig. 1 to its dotted line position in Fig. land out of the notch Ia of the shackle Il.

The shackle will then be propelled by spring 2l from its position ofFig. 3 to its position of Figs. 4 and 6. The leg I6 of the spring I4 isbent at 25 so that the key 25, in rotating, will not move the said YlegI6. Therefore, -leg I6 Will be in a position to cooperate with theshouldered portion 2@ of the shackle Il, as is probably best shown inFig. fi, for limiting the movement of the shackle il out of the padlockcasing. 20

Referring now to Figs. 3, 4 and 5, it will be noticed Vthat the leg I6of the spring I4 is oiset relatively to the .leg I 5,'the offset beingin the direction of the .movement of the shackle I'i in and out of thepadlock casmg. This oiiset relationship is particularly designed toprevent the reinsertion of the shackle Il into the casing in anyposition other than that shown in 'Figs 3 and 4. It will be noted .thatif the shackle is moved downwardly from its position of Fig. 4, thenotch ia will come opposite the spring I5, whereupon the spring I5 willdrop inwardly into the notch ld and lock the shackle as shown in Fig. 3.

If the shackle vIl in Fig. 4 be rotated, however, so as to bring itsnose i3 to the position of Fig. 5, .then lthe shoulder 2l of the shackleIl will be vimposed over leg I6 of the spring lil. In this position ofthe parts, it will be impossible to move Ythe shackle .downwardly intothe casing. This, of course, preventsthe shackle from being locked bythe'leg IE of the spring le .through entry of the spring into the notchIiia. In this way, the leg Iii of.. the spring I 4, in addition to itsfunction oi limiting the ejection oi the shackle from the padlockcasing, also controls the reinsertion of the shackle into the casing,kand prevents the locking of the shackle in any position but apredetermined position.

It is readily appreciated that if the relation of the parts were not asherein shown, the shackle 50 could be rotated from the position of Fig.4 to the position of Fig. 5 and then pushed downwardly, so that thespring leg I6 would thereafter lock theV shackle in the casing While thenose I3 of the Yshackle was out of the chamber I9. This would require areopening of the lock, and in case the shackle having a pair of legs, aportion of said shackle cooperating with one of said legs when saidshackle is in locked position in said casing whereby said leg retainssaid shackle in said locked position, said spring leg being vmovable bykey operation out of cooperation with said shackle to permit movement ofsaid shackle out of said padlock casing, and means on said shacklecooperable with the other leg of said spring as said shackle movesoutwardly of said casing whereby to limit the movement of the shackleout of said padlock casing.

2. In a padlock of the class described, a padlock casing, a shackle, a Uspring for locking said. shackle having a pair of substantially parallellegs, a portion of said shackle cooperating with one of said legs whensaid shackle is in locked position whereby said leg retains said shacklein said locked position, said spring leg being movable by key operationout of cooperation with said shackle to permit movement of said shackleout of said padlock casing, and means on said shackle cooperable withthe other leg of said spring as said shackle moves outwardly of saidcasing whereby to limit the movement of the shackle out of said padlockcasing.

3. In a padlock of the class described, a padlock casing, a shackle, aspring for locking said shackle having a pair of legs, a portion of saidshackle cooperating with one of said legs when said shackle is in lockedpositionwhereby said leg restrains said shackle in said locked position,said spring leg cooperating with said shackle being movable by keyoperation to release said shackle for movement out of said padlockcasing while the other spring leg remains iixed, and means on saidshackle cooperable with said xed spring leg as said shackle movesoutwardly of said casing to limit the movement of the shackle out ofsaid padlock casing.

4. In a padlock of the class described, a padlock casing, a shackle, a Uspring for locking said shackle having .a pair of substantially parallellegs, a portion of said shackle cooperating With one of said legs whensaid shackle is in locked position whereby said leg retains said shacklein said locked position, said spring leg cooperating with the saidshackle being movable by key operation to release the shackle formovement out of said padlock casing, the other of said spring legs beingdeformedto avoid said key operation whereby to remain fixed, and afurther portion of said shackle cooperable with said fixed spring leg tolimit the movement of the shackle out of said padlock casing.

5. In a padlockof the class described, a padlock casing, a shackle, aspring for locking said shackle having a pair of legs, a portion of saidshackle cooperating with one of said legs when said shackle is in lockedposition whereby said spring leg retains said shackle in said lockedposition, said spring leg being movable by key operation out ofcooperation with said shackle toV when partially out of said casing, andmeans on said shackle cooperating with said other spring leg forpreventing movement of said shackle back into locked position until saidshackle is rotated to a predetermined aligned position relatively tosaid casing.

6. In a padlock of the class described, a padlock casing, a shacklehaving a toe and a heel, a spring for locking said shackle at its heel,a portion of the heelof said shackle cooperating with a portion of saidspring when said shackle vis in locked position whereby said springretains said shackle in said locked position, said spring portion beingmovable by key operation out of cooperation with said shackle heelportion to permit'releasing movement of said shackle out of said casing,said shackle being freely rotatable when partially out of said casing,and mea-ns on said shackle heel cooperable with another portion of saidspring for preventing movement of said shackle back into locked positionuntil said shackle is rotated to a predetermined aligned positionrelatively to said casing.

7. In a padlock of the class described, a padlock casing, a shackle, a Uspring for locking said shackle, a notched portion of said shacklecooperating with one leg of said U spring for locking said shackle insaid casing, said spring leg being movable by key action out of thenotch in said shackle to permit sliding of said shackle out of saidcasing while said spring leg bears frictionally on said shackle ready tojump into said notch when said shackle is moved back into said casing,the other leg of said U spring being adapted to rub on the other side ofthe shackle as said shackle moves in and out of said padlock, said otherspring leg being offset in a direction vparallel to the shackle movementrelatively to said rst spring leg, and a surface on said shacklecooperable with said oiset spring leg to prevent sliding of said shackleinto locked position in said casing until said shackle is properlyaligned relatively to said casing and said rst spring leg.

8. In a padlock of the class described, a padlock casing, a shackle, a Uspring for locking said shackle, a notched portion of said shacklecooperating with one leg of said U spring for locking said shackle insaid casing, said spring leg being movable by key action out of thenotch in said shackle to permit sliding of said shackle out of saidcasing while said spring leg bears frictionally on said shackle ready tojump into said notch when said shackle is moved back into said casing,means on said shackle cooperable with the other leg of said U spring forlimiting the movement of said shackle out of said casing, said otherspring leg being oiset in a direction parallel to the shackle movementrelatively to said ilrst spring leg, and a surface on said shacklecooperable with said offset spring leg to prevent sliding of saidshackle into locked position in said'casing until said shackle isproperly aligned Y relatively to said casing and said rst spring leg.

9. In a padlock of the class described, a padlock casing, a shackle, a Uspring for locking said shackle, a notched portion of said shacklecooperating with one leg of said U spring for locking said shackle insaid casing, said spring leg being movable by key action out of thenotch in said shackle to permit sliding of said shackle out of saidcasing while said spring leg bears frictionally on said shackle ready tojump into said notch when said shackle is moved back into said casing,the other leg of said U spring being adapted to rub on the other side ofthe shackle, the end of the shackle cooperating with said other springleg to limit the movement of said shackle out of said casing, the saidshackle being rotatable when out of the casing a predetermined distance,and means on said shackle cooperable with said other spring leg toprevent reinsertion of said shackle except when its locking notch isaligned relatively to said rst spring leg.

10. In a padlock of the class described, a padlock casing, a shackle, aU spring for locking said shackle, a notched portion of said shacklecooperating With one leg of said U spring for locking said shackle insaid casing, said spring leg being movable by key action out of thenotch in said shackle to permit sliding of said shackle out of saidcasing while said spring leg bears frictionally on said shackle ready tojump into said notch when said shackle is moved back into said casing,the other leg of said U spring being adapted to rub on the other side ofthe shackle as said shackle moves in and out of said padlock, the end ofthe shackle cooperating with said other spring leg to limit the movementof said shackle out of said casing, the said shackle being rotatablewhen out of the casing a predetermined distance, said other spring legbeing oiiset in a direction parallel to the shackle movement relativelyto said first spring leg, and a surface on said shackle cooperable withsaid offset spring leg to prevent sliding of said shackle into lockedposition in said casing until said shackle is properly alignedrelatively to said casing and said first spring leg.

11. In a padlock of the class described, a padlock casing, a shackle, aU spring having a pair of substantially parallel legs, one of which tsinto a locking notch of said shackle for locking said shackle againstmovement outwardly of said casing, a shouldered portion on said shackleon the side thereof in which said locking notch is formed and below saidlocking notch, a limiting notch on the side of said shackle oppositesaid locking notch, the other leg of said spring resting normally insaid limiting notch tolimit the outward movement of the shackle when itis released by said rst leg, said shackle being free for rotation whenout of said casing an extent allowed by said other spring leg, saidother spring leg cooperating with said shouldered portion to prevent theinsertion of the shackle fully into said casing when said shoulderedportion is opposite said other spring leg.

FRANK E. RAYMOND.

